286 BORAGINACEAE. 



7. Lappula occidentalis (S. Wats.) Greene. {Echinospermum Redowskyi 

 occidentalis S. Wats.) In sandy places and on dry plains from Sask. and 

 Wash, to Mo. and N. M. — Alt. 4000-10,000 ft. — Twin Lakes ; mesas near 

 Pueblo ; South Cheyenne Canon ; Colorado Springs ; plains near Denver ; 

 Mancos ; Cimarron ; river-bluflfs, north of La Veta ; Mountain View ; An- 

 tonito ; Valley Spur ; along Uncompahgre River near Ouray ; Los Finos ; 

 Ft. Collins ; Howe's Gulch ; bank of Arkansas River ; Quimby ; Spring Cation ; 

 Manitou. 



8. Lappula cupulata (A. Gray) Rydb. In river valleys from S. D. and 

 Ida. to Tex. and Colo. — Alt. 4000-5500 ft. — New Windsor, Weld Co. ; mesas 

 near Pueblo ; Hotchkiss, Delta Co. ; Canon City ; Denver ; Ft. Collins. 



9. Lappula collina Greene. On dry hills from Colo, and Utah to Tex. and 

 Ariz. — Palisades. 



2. ERITRICHIUM Schrader. Mountain Forget-me-not. 



Dorsal surface of the nutlets margined with a ridge-like ring, but not toothed. 



1. E. elongatum. 

 Dorsal surface of the nutlets with a toothed border ; corolla 4-5 mm. wide. 



2. E. argenteum. 



1. Eritrichium elongatum (Rydb.) White. (£. aretioides elongatum 

 Rydb.) On high mountain tops from Mont, and Ore. to Colo. — Alt. 11,000- 

 12,000 ft. — Headwaters Clear Creek ; above Beaver Creek. 



2. Eritrichium argentum White. (Omphahdes nana aretioides A. Gray) 

 On alpine peaks from Wyo. to Colo, and Utah. — Alt. 11,000-14,400 ft. — 

 Gray's Peak ; mountains above Como ; mountains of Estes Park, Larimer Co. ; 

 Pike's Peak; Chicago Lake; Argentine Pass; Bald Mountain; Bush Creek, 

 Custer Co. 



3. PIPTOCALYX Torr. 



I. Piptocalyx circumscissa Torr. {Krynitzkia circumscissa A. Gray) In 

 dry soil from Ida. and Wash, to Colo., Ariz, and Calif.— Routt. Co., near 

 Wyoming line. 



4. OREOCARYA Greene. 



Fruit depressed ; nutlets at the margin separated by an open space. 

 Leaves appressed-canescent, not hispid ; corolla 5-7 mm. wide. 



1. O. cinerea. 

 Leaves with a fine canescence intermixed with hispid hairs ; corolla less than 



S ram. wide. 

 Plant low, grayish, not yellowish-hispid above ; racemes short, 2-ranked. 



2. O. suffruticosa. 

 Plant tall, yellowish-hispid above; racemes in fruit elongated, i -ranked. 



3. O. multicaulis. 

 Fruit conical or ovoid ; nutlets touching each other. 



Corolla-tube not exserted. 



Floral leaves long, many times longer than the short flower-clusters. 



4. O. virgata. 

 Floral leaves comparatively short, little if at all surpassing the flower- 

 clusters. 



Sepals ovate-lanceolate, only slightly exceeding the mature nutlets ; in- 

 florescence a panicle with rather few branches. 



